Using 4 tubes, this 1924 receiver combines new technologies as an intermediate frequency stage that was already beginning to appear. Listening is via phone and battery power.
This circuit locks after a short touch on the sensor. The circuit can be powered by voltages from 5...
May 2017 - Torex's XBP14E5UFN, an array of TVS circuit protection diodes with only 0.8 pF of...
This circuit triggers oscillator 555 when the supply voltage drops below the value set in the pot....